求不定积分 ∫x/sin^2dx

求不定积分：∫sin(x^2)dx 求不定积分∫sin(x/2)dx ∫[(sin^2)x]dx求不定积分 求不定积分∫sin x^2dx 求不定积分 ∫x/sin^2dx 求不定积分x( sin^2)x dx 求不定积分∫sin2x/2 dx 求不定积分∫sin² x/2 dx ∫(x^3 )*(sin x^2) dx 求不定积分 求不定积分?∫ x sin(x/2) dx 求不定积分 ∫ x sin 2x dx 求不定积分 ∫ (ln sin x) / (cos^2 x) dx ∫1-sin2x/sin^2x-x dx求不定积分 ∫sin^4 (x) dx 求不定积分 求不定积分 ∫ sin(ln x) dx sin(x^1/2)dx 求不定积分 求不定积分∫[1/(sin^2 cos^2(x)]dx 求不定积分,∫sin^2xcos^2x dx 求不定积分∫[1/sin^2cos^2 (x)]dx